Do the pro-life democrats understand that an Executive Order can be rescinded by another Executive Order?

Do they seriously think that this pro-choice president, who has lied through the process the entire way, will actually keep his word when it can all be undone with the stroke of a pen? And with the delayed onset of the benefits, he can wait several years until everyone has already forgotten about it, and then simply rescind the EO without anyone noticing.

The only explanation is that they needed political cover to satisfy their pro-life supporters.